<?php

/**
 * Field handler to provide simple renderer that allows linking to a user.
 */
class views_handler_field_user extends views_handler_field {

    /**
     * Override init function to provide generic option to link to user.
     */
    function init(&$view, &$data) {
        parent::init($view, $data);
        if (!empty($this->options['link_to_user'])) {
            $this->additional_fields['uid'] = 'uid';
        }
    }

    function option_definition() {
        $options = parent::option_definition();
        $options['link_to_user'] = array('default' => TRUE);
        return $options;
    }

    /**
     * Provide link to node option
     */
    function options_form(&$form, &$form_state) {
        parent::options_form($form, $form_state);
        $form['link_to_user'] = array(
            '#title' => t('Link this field to its user'),
            '#description' => t('This will override any other link you have set.'),
            '#type' => 'checkbox',
            '#default_value' => $this->options['link_to_user'],
        );
    }

    function render_link($data, $values) {
        if (!empty($this->options['link_to_user']) && user_access('access user profiles') && $values->{$this->aliases['uid']} && $data !== NULL && $data !== '') {
            $this->options['alter']['make_link'] = TRUE;
            $this->options['alter']['path'] = "user/" . $values->{$this->aliases['uid']};
        }
        return $data;
    }

    function render($values) {
        return $this->render_link(check_plain($values->{$this->field_alias}), $values);
    }

}
